Self-service gasoline-pump attachment



Dec. 21 1926.

G. W. KECK SELF SERVICE GASOLINE PUMP ATTACHMENT 5 Sheets-Sheet 1 Filed Dec. 31, 1925 Dec. 21,1926. 1,611,199

- G. W. KECK SELF SERVICE GASOLINE PUMP ATTACHMENT Fild Dec. 51. 1925 5 Sheets-Shet 2 t 2Z7 5... -'1 v l l I I Qwuantoz 660/ 6 Puma/5.

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G. W. KECK SELF SERVICE GASOLINE PUMP ATTACHMENT Filed.D e0. 31, 1925 5 Sheets-Sheet s V flea/ye W522i T 5 ShetsShe1: a

G. W. KECK Filed Dec. 31, 1925 'SELF SERVICE GASOLINE PUMP ATTACHMENT Dec. 21 1926.

Gab/ye W11 Dec. 21 1926.

e. w. .KECK

SELF SERVICE GASOLINE PUMP ATTACHMENT Filed Deb. 31

, 1925 5 Sheets-Sheet 5 5 a 4 W 8 W a v M w u n 6. a J w 3 4 F; 4 "m K I 7 q 4 4 W, 7 L. n 4 4 I 9 u. w 6 4 "M Md 9 7 6 b 8 0 m 6 J Q U r 7% a M fi n z M m. M Q a m M Y W .....2.......:. m mllllL h I m 7% a m 0 6 l m a v; M e w M M v f 4 w w 9 9 z M 7 f w w 5 g 9 4 a 4 9 Patented Dec. 21, 1926. r

, ETE STA'EES] latent GEORGE w. KECK, E innEr vnENoE, Kansas.

s LE-sEnvIoE GASOLINE-PUMP ATTACHMENT.

Application filed n cemter'ai, 1925, Serial No. 78,565.

' This invention relates to certain'new and useful improvements in attachments for gasoline pumps of the type employed in connection with the dispensing of gasoline for motor vehicles and other uses and has for 1ts pr1mary ob ect to provldea seriesof.

manually operative devices for feeding a predetermined quantity of gasoline to a dis pensing receptacle or bowl and delivering the gasoline from the bowl to thecustomer with the operation of said devices being coin-controlled. I I I I The invention relating to a self-service gasoline pump attachment that is controlled in its operation by a coin of a predetermined denomination, said invention embodies devices for detecting a false or counterfeit coin,

suchjas a washer, and being constructed to prevent operation of the mechanism and discharge of the false coin to eliminate clogging in the mechanism. r

The invention further embodies devices I renderedoperative in the presence of a coin the release of the supply valve to open a valve and permit the flow of-gasoline from astorage tank lntoa delivery receptacle or bowl, such as in common use,

with the overflow. of "gasolinethrough the;

stand pipe in the delivery bowl effecting to permit the closing thereof.

The invention further embodies manually operabledevices for releasing or opening an outlet valve in the delivery bowl, the coin in passing through the operating mechanism sequentlally rendering operative the manually operable devices and finally discharged into a coin receptacle, there being provided automatically operating devices fo-r holding' the controlling valve in either open or closed positions. I I

With the above and other objects in view that will become apparent as the nature of the invention is better understood, the same throughout the several views,

consists of the novel form combination and arrangement'of parts hereinafter more'fully described, shown in the accompanying drawings and claimed.

In the drawings, I characters designate 2 corresponding wherein like reference Figure 1 is a side elevational view of gasoline pump attachment that is arranged in proximity of a delivery receptacle 7 or bowl with the covering or casing therefor re moved and showing the three plunger rods for per t the same, i,

I parts i Figure 2 is a rear elevational view of the device showing the coin detector cylinder for delivering the coin to the cylinder that effects opening movement of the valve to Con trol the supply of gasoline to the delivery bowl and a third cylinder to receive the coin taken on line V-'-V 'Of Fig. 2 showing the cup or bucket in the gasoline return pipe to effect releasing or closing movement of the valve that controls delivery of gasoline to the delivery bowl,

' Figure 6, is a horizontal sectional view taken on line VIVI of Fig. 2 showing the coin detector'cylinder and the lever to effect release of a false or counterfit coin,

Figure 7 is a side elevationallview, partly in section showing the piston rod that opens the valve to deliver gasoline to the delivery bowl extended and operating the dog to re-;

lease the same from the pistonrod that operv tomer, I v v i i I Figure IS a fragmentary. side elevational view showing the tensioned dog for holding ates the valve to deliver gasoline to the custhe piston rod for the deliveryvalve in open position, and

Figures 9 views of the two control cylinders for operating theyalve.

The operating mechanism for the gasoline and 1 0 show detail sectional pump s encased in a'box structure or the like andthe direct supportingmeans for the operatingmechamsm includesa wall 1' of plate formation carrying an angle wall hav-- ing one side 2-thereof securedas at 3 to the V wall l with the end wall t extending at right I angles and alined with the operating mechanism as shown in Fig.6. The two wall members are further connected by angle braces 5.

Three horizontal: cylinders arranged in parallel spaced relation and numbered-6, 7

and 8 are secured as at 9 upon the wall 1, the cylinderf6 acting as a coin detector, the cylinder 7 operating a 'valv'e to cause the flow of gasoline from a supply tank to-a delivery bowl while the cylinder 8 operates the valve for controlling the delivery of the gasoline from the bowl to a purchaser. The delivery bowl, not illustrated, being in the form of a glass container commonly used, incloses an overflow pipe 10 illustrated by dotted lines in F 5 and is connected to a return pipe 11 that has a pipe connec- "tion 12 with the main supply tank, the re value of halffdollar or dollar coins. A coin is inserted in the opening 15 formedin the wall 2 and directed into'the coin chute 16 supported as at 16 upon the inner face of the wall 1. The coin passes downwardly in the chute 16 and enters the cylinder (3 through the slotted opening 17.

A cap 18' closes the outer end of the cylinder 6 and confines a coil spring 19 that engages at its inner end the pistonmembers 20 and 21 to normally force the same in a direction toward the wall 4': of the supporting frame. The piston members 20 and 21 are spaced as at 22 and so retained by the laterally positioned key 23 shown more clearly in Fig. 6, which hey is slidable in the longitudinal slot 2-l formed in the cylinder 6. lVhen the piston members 20. and 21 are at their limit of retracted movement the space 22 tberebetween is alined with the chute 16 and in position to receive a coin from the chute. As shown in 3, the piston member 21 is provided, with a recess 7 25 closed at its outer end byia screw plug 26, the bottom wall of the recess and screw plug having 'alined openings through which a pin 27 is slidable, that portion of the pin within the recess being siu'rounded by a coil spring 28 thatengages the bottom wall of. the recess and the collar 29 fixed to the pin for normally holding the outer end of the pin in a position to project slightly Jeyond the outer face of the screw plug' 26. ,A plunger 30 slidable through the end wall 4 of the supporting frame is pivotally con nected as at31 to a cam 82, said cam being pivotally supported as at 33 upon the bracket 34 that and 2 of the supporting frame. A lever pivotally supported upon the pin 33 above the cam'82 carries an operating handle 87 freely extending through registering slotted openings {58 inthe walls 1 and 2 of the supporti g frame.

1 69131118 received in the spape 2.2

is anchored as at tothe walls 1' between the piston members 20 and 21,'the plunger rod 30 is operated to cause the cam 32 to move upon the pivot pin 33 and engage the pin 27 and plunger member 21 to move the two plunger members in the cylinder 6 against the tension of the spring 19. The pin 27 is slightly projected from the piston member 21 to frictionally engage the coin to hold the coin between the two piston members and to pass safely over the slotted opening 89 in the bottom wall of the cylinder 6 and to place the coin above the slotted opening 40 that communicates with the coin chute ll for delivering a coin fromithe cyl inder 6 into the cylinder 7 through the slotted opening 42 in the upper side of the latter cylinder. When the coin has been disposed over the opening 40 in the cylinder 6, pressure on the plunger rod 30 is relieved and thepiston members may be retained in their projected position against the tension of the spring 19 by the lever 36 engaging the outer end of the piston member 21, the pin at this time being disengaged from the coin by the spring 28 with'the coin dropping through the chute 41 into the cylinder 7, In the event of the use of a false or counterfeit coin, such as a washer or the like, the pin 2? would be positioned in the central opening of the washer and when the piston members 20 and 21 were projected, the false coin or washer would drop into the first slotted opening 39, and to eliminate clogging of the machine, pressure on the plunger rod 30 is relieved and by operating the lever 36 to vibrate the pistonmeinbers, the false coin or washer would be shaken loose and dropped from the cylinder 6 through the slot-ted opening 89. p 1 g The cylinder 7 being coin controlled in its operation, the end thereof adjacent the wall. 4 of the supporting frame has a bearing plug secured therein and provided with an axial opening for the plunger rod ethat is tensioncd at 41.5. A piston head 45 slid.- able in the cylinder '7 is retained against rotary movement by the stud screw it? pro jecting through the slotted opening 418 in the wall of the cylinder as shown in Fig. 9 and said piston head 46 is provided with a central opening a lin-ed with the tub lar piston rod 49 that slidably extenos through the 2 block 50 secured in the outer end of the cyl 'inder. A'coil spring 51 surrounding the tubular piston rod 49 and engaging the piston head 4-6 and blocl: 5O retains the piston head at its limit of inward movement with n the cylinder that fs-occas oned by the stop 'lug oi'l projecting laterally of the tubular piston and line'tanlr and an outlet pipe :56 to a gasoline dlspensing bowl. When the coin is delivered into the space 57 between the block 43 and piston head 46. in the cylinder '7, the same is engaged by the plunger rod 44- as shown in Fig.9 to effect movement of the piston head and piston rod for operating the valve inth-e case 54. The coin G is carried forwardly by the plunger rod 44 and is positioned over the outlet slot 58 inthe lower side of the cylinder 7 and being discharged through said slot enters the cylinder 8 through the slot 59 in the upper side thereof in a manner to be presently described.

It being desired to retain the tubularpiston rod 49 in its extended position with the valve in the case 54 open to supply gasoline to thedelivery bowl, devices are provided "for enga'gingthe piston rod to :hold the same extended and include the provision, of a side open1ng69 in the piston rod 49 as shown in Fig. to receive the lug 61 upon the lever 62, shown more clearly in Fig; 4, the lever 62 being pivot-ally mounted as at 63 upon the outer end of the cylinderrblock 50 and downwardly spring pressed as at 64 to cause the lug 61rconstantly'to ride over the side of the piston rod 49. With the tubular piston rod 49 extended and with the lug 61v upon the lever, 62 received in theopening in the pistonrod the valve in the case 54 is re rained 1n anopen' position ZIDCl gEISGlHIQJS vpermitted to flow from the main supply tank to the delivery bowl. while the piston rod 49 is retain-ed in a projectedposition:

With the piston rod so disposed, the piston 46 is positioned at the outer side of the lower coin slot 58 and when the plunger rod 44 is retracted by the spring 45, the coin is permitt edito drop from the cylinder 7 through the slots 58 and 59 into the cylinder 8. f

Devices are associatedwith the lever (52- to elevate the outer end thereof for disengaging the lug 61 from the piston rod 49 to permit the spring 51 to move the piston head 46 toward the end block 43 for closing the valve in the case 54 and cut ofl the supply of gasoline to the delivery bowl, such devices being operatedby the gasoline in the bowl entering the overflow pipe 10and passing through the return P113611 to the main supply tank. Asshown in Fig.7, the connec ion between the overflow pipe 10 and 38-- turn pipe 11 is providedwith a side openin bearing'66zthat' pivotally support-s as at 67', a lever 68,-the outer extending end of thele'ver.68", ,as shown in Fig. "4 having a link connection 69 with the outer end of the lever 62' Asshowu in'Fig. 5, a link rod 70 carried by the inner. end of the leverf68j within the return'pipe 11, the link rod .70

passing downwardlythrough the bucket'71' and angularly bent at its lower end to en gage thebottom wall of the bucket with-the lower bent .end of the link rod positionedh .pensing bowl.

between the spacedv lugs72 that receive a cross pin 731to retain the bucketin position upon the link rod. A horizontally posi- .tioned, slotted opening74 is formed in the bowl through the supply pipe 56s hown in Fig. 2 and rising above the overflow pipe 10 will flow into the latter and through the re; turn pipe 11 and pipe 12 to themain supply tank. The gasolinein passing throughthe return-pipe 12 will first be caughtby the bucket :71 and the weight of the'gasoline within thebucket will cause the latter to rbe" lowered'to operate the lever: 68and through the link'connection 69 with the lever 62, elevate the outer end of the lever 62 to disengage the lug 61 from the opening 60 in the tubular piston rod 49, the spring 51"rnoving the piston rod into the cylinder 7 and'being limited by'the; lug 52 engagingthe outer face of the block 50,"'su'ch movement causing the lever 53carried by the outer end of the piston rod 49 to operate the valve in the case 54 to shut off the supply of gasoline to thedispensing bowl. The bucket 71 being lowered through the return pipe ll-perinits the overflow of gasoline to pass through the slotted opening 74 in the-side wall thereof to Y be returned to the main supply tank so that only a predetermined quantity or gasoline controlledjby the authorized adjustment-of theoverflow pipe 10 will remain in the dis-.-

An'outlet valve is provided for the gasoline dispensing bowl and the operation thereof is effectedby devices associated with the cylinder 8, said cylinderbeing of a construction andhousing'apiston and piston rod similar to the cylinder the inner end of thefcy'linder 8 having a centrally apertured block 75 set therein with the outer end there ot'closed by the centrally apertured block 76.

The' plunger. rod 77 slidable through the'end wall 4' of the supporting frame passes thr'oughth apertured block 75 and is spring pressed as at 78. The centrally ape'rtured piston head 7 9 carries a tubular piston rod 80 slidable through the end block 76, said piston'rod '80 being surrounded by the coil spring Slfor moving the piston head 79 toward the block 75 such movement being limited by the 'bearin'g' 82 for'the 'aicuate arnr831securedto the outer projecting end out the tubular piston rod '80 as shown in Figsd and'st The piston head 7.9 being reciproeable within the cylinder 8, rotary inov'e'rnent'ithereot is prevented by the stud screw-e7 jeiitending through. the slotted opningsa h cylinders and sh wn in detail iiifFigg 10' a lvhenuthe coin C passes v.ithroug h the slotted'opening 59in the side of thecylinder '8, the same is received in the space .84between the end block 7 5 and piston head 79 and in,

livering the gasoline to a purchaser.

Devices are provided for holding the dispensing valve in an open position and in cludes a bracket .89 supported upon the wall 1 of the supporting frame adjacent the outer end of the cylinder 8and upon whichthe dog 90..is .pivotally mounted as at 91, said dog being provided .on one end thereof with arcam arm 92 .while the other end is formed with aflatch '93. As shown in Fig. 6, a coil spring 194 encirclesathe pivot pin 91 with one end thereof engaging the bracket 89 while the other end of the spring engages the dog 90 adjacent the latch 93 for normally influencingthe latch in a direction toward the piston rod 80 and causing the cam arm 92 of the dog to ride over the piston rod 49 of the cylinder 7 A. notch 95 formed in the outer end ofzthe piston rod 80 is adapted to receive the latch 93 when the .piston rod is projected to hold the latter in its extended position with the valve in the case 86 open for dispensing gasoline from the bowl. l/Vhen the tubular piston rod 80 is held in its projected position by the dog 90, the coin in the space 84 between the block and piston 79 is disposed over the coin outlet 84 by being forwardlyprojected by the plunger rod 77 and drops through said slot when the plunger 77 is'released, The outlet valve for the dispensing bowl remains in an open position after the contents of the bowl have been emptied and is moved to its closed position during the subsequent operation of the mechanism during the following purchase of gasoline. A coin being received in the detector cylinder 6 and moved into the cylinder 7 for operating the valve in the case 5.4 that delivers gasoline to the dispensing bowl, operation of the piston rod 49 efiects the release of the piston rod and the closing of thelvalve in the case 86 that controls the discharge of gasoline from'the dispensing bowl. As shown in Fig. 3, a. button 96 carried by the piston rod 49 engages the cam 92 of the dog '90 for moving the dog uponits pivot pin 91 against the tension of the spring '94 tof'disengage the latch 93 from the notch 95 in the'piston rod 80, thespring 81 drawing thepiston rod into the cylinder 8 and-closing the valve in'fthe case 86. In theevent'that the bucket 71 in the return pipe 11 fails-to operate the lever 62 shown in "Fig. 4 f0r re-- leasing the valve that controls the supply of gasoline from the main storage tank to the dispensing bowl, the projectionof the piston rod '80 causesthe arcuate arm 83 to engage the lever 62, as will at once be evident from an inspection of the drawings to positively elevate the lever 62 and permit the spring 51 to retract the piston rod 49 into the cylinder 7 and close the supply valve in ation, the operation of the mechanism in the cylinder 7 effecting the supply of gasoline from amain storage tank to the dispensing bowl while the operation of the mechanism associated with the cylinder 8 closes the supply valve and opens the valve that permits discharge of the gasoline in the dispensing bowl to the purchaser. Itis to be understood that gasoline maybe delivered from the main storage tank to the dispensing bowl in any suitable manner, such as by air pres sure or pump mechanism, the operation of such devices being controlled by the piston rod 49. Also, the piston rod 49 may control electric switches, controlling gears, a pump handle or lever and any form of mechanism that is capable of being locked, and released by projecting movement of the piston rod 49.

While there is herein shown and described the preferred embodiment of the presentin vention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed. V 7

What is claimed is '1.In a self-service gasoline pump attachment, the combination with a main storage tank, a dispensing bowl and means for delivering gasoline from the tank to the bowl, of coin controlled mechanism for control: ling the supply and discharge of gasoline to and from the bowl, said mechanism including separately operable devices for the supply and discharge, said bowl having an overflow pipe therein communicating with a return 'pipeleadilr to the storage tank, means'for holding the su-pply mechanism for the bowlin an open position, andimeans in the return pipe rendered operative by overflow gasoline passing therethrough and associated with the supply mechanism to release the latter. j V

2. In a self-service gasoline pump attachment, the combination with a main storage ling the supply and dischargeot gasoline to and from the bowl, said mechanism including separately operable deiv'icesfor the supply and discharge and sequentially rendered operative by a coin passingthrough'the mechanism, said bowl having'an overflow,

pipe therein communicating with a return pipe leading to the storage tank, means for holding the supply mechanism for the bowl in an open position, and means in the eturn gasoline pipe rendered'operative by overflow gasoline passing therethrough and associated with the supply mechanism to release the latter.

3. Ina seltservice gasoline pump attachment, thecombination with a main storage tank,a dispensing bowl and means for delivering gasoline from the tank to-the bowl,

ling-the supply and discharge of gasoline to and from the bowl, sai'cl mechanism including separately operable devices for the sup ply and discharge, said bowl having an overflow pipe thereincommunicating with a return pipe leading tothe storagetank,

means for holdlng the supply mechanism for the bowl in an open positiomineans in the return pipe rendered operative: by overflow gasoline passing therethrough and as sociated with the supply mechanism to release the latter, and said overflow pipe being adjustable in the bowl for dispensing various quant-1t1es of gasohne and unaliecting the operation of the releasing means for the supply mechanism.

4. In self-service gasoline pump attachment, the combination with a main storage tank, a dispensing bowl and means for delive'ring gasoline from the tank to thebowl,

of coin controlled mechanism for control- "a ling the supply and discharge of gasoline" to and fronrthe bowl, said mechanism in-V eluding separately operable devices for the supply and discharge and sequentially rendered. operative by a coin passing through the mechanism, said bowl having an over flow pipe therein communicating with areturn pipe leading to the storage tank, means for holding the supply mechanism for the bowl in au open position, meansin the. return pipe rendered operative by overflow ciated with the supply mechanism to release the latter, and said overflowplpe belng ad iustable in the bowl for dispensing various operatiofi o'f the releasing means for the. supply mechanism. Y

passing therethrough' and ,asso-v,

quantities of gasoline and euna'ii ecting the return pipe 'leading to the storage tank,"

means for holding the :supply mechanism for-the bowl in an open positioma bucket suspended in the/return pipe and. connected totli'e holding means and adapted to op- [e'rate' the 'latter when' weighted with over flow gasoline. I v v 6. In a self-service gasoline pump attachmentfthe combination with a main storage tank, a dispensing bowl and means iordelivering gasoline fromthe tank to the bowl,

of coin controlledmechanismr for control ling the supplyand"discharge of gasoline to and from the bowl, said mechanism :inv cludmgseparat'ely operable dGV1CS"f01 the of 00111" controlled mechanism for" controlsu l and dischar e and se uentiall ren' dered operative by a coin passingcthrough the mechanism, said bowl having an over-' ed in the return pipe and connected to the holding means and adapted to, operate-the.

latter when weighted with overflow gaso limp. I Q

7; p Ina sel'f service gasolinepump attachnient, the combination with a inaln storage tank, a dispensingbowl andmeans-fordelivering gasoline irom the tank tothe bowl of coin controlled mechanism for control ling the supply and discharge of gasoline to and vfrom the bowl, said mechanismincluding separately operable devices to'r the supply and discharge, said bowlhaving' an overflow pipe therein communicating with arreturn pipe leading to the storage tank, means for llOlCllIigllllG supply mechanism for the bowl in an open position, a bucket I suspended in the returnpipe andoonnected to the holdig means andadapted to operate the letter when" weighted 'with oversee gasoline, and said bucket cooperating with the wallfoi the return pipe to retain gasot ankwhen lowered by the weight ofjthe pipe." 1 I ,8. In a selfservice asoline umfattach ment, the combination with a main storage gasoline belOwthe lower end of the return 'line therein"and being constructed to; discharge thegasoline for return to the storage tank, a dispensing bowl and means for de livering gasoline from the tankto the bo-whi of coin controlled mechanism for/controlling V th'e suppl'y and discharge oigasoline to and from the bowl, said mechanismincluding;"

separately operable devices iotthe supply and discharge i and sequent ally rendered by the weight of the gasoline below the low er end of the return pipe.

. 9. In. a self-service gasoline pump attachment, the combination with a main storage tank, av disp'ensingbowl and means for. de-

livering gasoline from the tank to the bowl, of com controlled mechanism for controlling the supply and discharge of gasoline to and from the bowl, said mechanism lncludmg separately operable device s torthe supply and discharge, said'bowl having an overflow pipe therein communicating wlth a return pipe leading to the storage tank, means for holding the supply mechanism for the bowl in an open position, a bucketsuspended in the return pipe and connected to the holding means and adapted to operate the latter when weighted with overflow gasoline, said bucket having a slotted opening adjacent its bottom wall normally closed by the wall of the return pipe when the bucket is elevated and the supply mechanism is open and said bucket being moved downwardly by the weight of gasoline therein to release the holding means and dispose the bucket slot below the lower end of the return pipe for returningthe' overflowing'gasoline to the storage tank. a

10. In a self-service gasoline pump attachment, the combination with a main storage tank, a dispensing bowl and means for delivering 'gasoline from the tank to the bowl, of coin controlled mechanism for controlling the supply and discharge of gasoline to and from the bowl, said mechanism including separately operable devices for the supply and discharge and. sequentially rendered.

operative by a coin passing through the mechanism, said bowl having an overflow pipe therein communicating with a return pipe leading to the storage tank, means for holding the supply mechanism for the bowl in an open position, a bucket suspended in the return pipe and connected to the holding means and adapted to operate the latter when weightedwith overflow gasoline, said bucket having a slotted opening adjacent its bottom wall normally closed by the wall of ,the return pipe when the buck'et is. elevated,

and the supply mechanism is open and said bucket. being moved downwardly by the weight of gasoline therein 'to release. the

holding means and dispose. the bucket slot below the lower end of. the return. pipe for returning the overflowing gasoline to the storage tank.

11. In a self-servicegasoline pump attachdeliver gasoline to the bowl, means for retainingthe valve in an open position, operating aval ve to discharge gasoline from the bowl, means for retaining the discharge valve in an. openposition, and saidlast named means being rendered inoperative upon operatlon otthe valve that delivers gasoline to the bowl,"

]2. In a self-service asoline mm 1 attach- 2D ment the combination with a main storage tank, a dispensing bowl and means "for delive-ring. gasoline from the tankto the bowl, of a series of cylinders, a piston in each cylinder, a. plunger rod. for manually operat ing each piston, said cylinders being arranged and provided with coin passage slots for thesequential passage of a coin therethrough received in thelirst cylinder, means associated'with the; piston in the first cylinder to deliver a coin to the second cylinder, the other cylinders being coin controlled in their operation, means operated. by the piston ot' the second cylinder for delivering gasoline from the storage. tank to} the bowl, and means operated by the piston of the last cylinder for delivering.gasoline from the bowl to the purchaser. V c r I 13. In a self-service gasoline pump attachment the combination with a main storage tank, a dispensing. bowl and means for delivering gasoline from the tank to the bowl, of a series of cylinders, a piston in each cylinder, a plunger rod forv manually operating each piston, said cylinders being arranged and provided with'coin passage slots for the-sequential passage of .a coin therethrough received in the first cylinder,

means associated with the piston in the first cylinder to deliver a coin to the second cylunder, the other cylinders being CO111 COIltrolled in their operation, means operated by the piston or" the second cylinder for delivering gasoline from the storage tank to the bowl,n1eans for holding the. piston in its extended operative position, means affected by the overflow of gasoline from the bowl to release theholdin'gnieans, and meansoperated by the piston of the last cylinder for delivering gasolinest'rom the bowlto the purchaser.

14. In a self-service gasoline pump attach ment the combination with a main storage tank, a dispensing bowl and means for delivering gasoline from the tankthe bowl: of a series of cylinders, a pistonin each cyloperative position.

' other cylinders being coin controlled in their operation, means operated by the piston of the second cylinder for delivering gasoline from the storage tank to .the bowl, means for holding the pistonin its extended operative position, means affected by the overflow of gasoline from the bowl to release the hold: ing means, means operated by the piston oi the last cylinder for delivering gasoline from the bowl to the purchaser, and means for holding the last named piston in ts extended 15. In a self-service gasoline pumpiattachnient tile combination with a main storage tank, a dispensing bowland means tor delivering gasoline from the tELDlQ'EO the bowl, of

a series of cylinders, a piston in 'eachcylinder, a plunger rod for manually operating each piston, said cylindersbeingarranged and provided ceived in the first cylindeigineans associated with the piston in the first'cylinder to deliver a coin'to the second cylinder, the other cylinders being c0111 controlled in their operation, means operated by the pistonof the seeond cylmderfor delivering gasoline from the storage tank to the bowl, means for holding thepiston in its extended operative position, means affected by the overflow of gasoline from the bowl to release-the holding means, means operated by the piston, of. deliveringgasoline from the last cylinder for the bowl to the purchaser, means for holding the last named piston in its extended operative position, and means carried by the piston of the second cylinder to release the holding means for the piston of the last cylinder. 7'

16. In a self-service gasoline pump at? tacliment the combinationwith a main stor age tank, a dispensing bowl and means for delivering gasoline: from. the tank to they bowl, of a series of cylinders, a piston in each cylinder a plunger lOCl ;-f0l manually operating each piston, said cylinders being arranged. and provided with coin passage slots for thesequential passageof a coin ,tlierethrough-received in the first cylinder,

iea-ns associated with the piston inthe first cylinder to deliver a coin to the second cylinder, the other trolled in their operation, by the piston of the second livering gasoline from the storage tankto the bowl, means for holding the piston in its extended operative position, means affected by the overflow of gasoline from the means associated with the piston with coin passage slots for the sequential passage of a coin therethrough refected by the overflow cylinders being coin con-I 'means operated cylinder for debowl to release the holding means, means operated byr-the piston of the last cylinder for delivering gasoline from the bowl to the purchaser, 'and a mechanical instrumentality carried'bythe piston of the last cyldelivering gasoline from th'e' tank to the bowl, of a series of cylinders,,a piston n each, cylinder, a plunger rod for manually operating each piston,-said cylinders being arranged and, provided with coin passage slots for'the sequential passage of a coin,

therethrough receivedin the first cylinder, in the first cylinder to deliver coin inder, the otheixcylinders being coin co'n-' trolled-in their operation, means operated by the pistonoi the second cylinder for de -l: livering gasol ne fi'onithe, storage tank to the bowl, means for holding the piston in its extended operative position, means of gasoline from the bowl to release the holding means,-means operated by the piston of the last cylinder for delivering gasoline from the bowl to the purchaser, means for position, and a mechanicalfinstrnmentality the holding when the, discharge valve for the bowl; is opened.

18,111 a" self-service. gasolinepumpattachinent the combination with a main stor-- age tank, a dispensing bowl and 111621119580? delivering gasoline from the tank to the to the second cyl holding the last named piston in its extended "operative ion.

bowl, of a series of cylinders, a piston in each cylinder, a'plunger rod for manually operatin each piston, said arrange and provided with coin" passage slots for theflsequential passage of a coin therethrough received in" the first cylinder, means associated with the piston in the first cylinder to deliver a coin to the second cylinder, the other-cylinders being coin controlled in their operation, means operated by the pistonofthe secondcylinder for delivering gasoline from the storage ammo the bowl, means forholding the piston in its extended operat ve position, means af- I fected by the overflow of gasoline'from the bowl to release the holdin'gmeans, means operated by the piston of, the lastcylinder for delivering gasoline from the bowl to the purchaser, means for holding the last named operative position,

piston in its extended cylinders being terring gasoline from a storage. tank and 1 operating 7 'ier and delivery oi thegasoline from't means carried by the piston of the second cylinder to release the holding means for the piston of the last" cylinder, and a me' ci'i'anical instrumentality carried by the piston of the last cylinder to positively engage and release the holding means for the piston of the second cylinder to insure the closing or the delivery valve when-thedischarge" valve for the bowl is opened.

19. The combination with pump, wherein means is provided for elevating a quantity of gasoline from a storage tank into a bowl, wherein means is further provided to control the elevation of the gasoline from the tank to the bowl by said-ele vating' means, and wherein overflow .means is provided torreturning to the storage tanksuch gasoline as is elevated ,to the bow-1 hr excess of said quantity, of c oin controlledmanually operable means for actuating said controlling means to cause theelevation of the gasoline to the bowl, means'to automatically operate said controlling means for stopping further elevation of gasoline tothe bowlupon occurrence of an overflow ol' excessgasoline from the bowl, and a second coin-controlled means to receive the C0111 from the first named coin controlled means and manually operable for effecting dispen-' sation of gasoline from the bowl to a de sired point of discharge.

20. An attachment for gasoline pumps, wherein means is provided to-elevategasoline from a storage tank into a lOOWl,:Wl1GT6lD means is-provid'ed to control the" operation of said'elevating means, and wherein means is provided for controlling the'dispensa'tion of the gasoline from the bowl, comprising manually operable coin-controlled means Ifor said dispensation controlling means to permit dispensation of from the bowl, and manually operable coincontrolled means to operate the controlling means for the elevating means, said last named manually operable means beingadapted when operated to deliver the con-' trolling coin to the first-named manually operable means.

21.1lhecombination with a gasoline pump, wherein means-is provided fortransdelivering a quantity thereof toa desired point of discharge, and wherein two control elements are provided to control the-transhe tank to said point of discharge,i-o'f coincontrolled means manually operable to render one of said control elements operative and to deliver the coin therefrom,means to a gasoline gasoline rel-13x99 automatically latch said one control element in operative-position, means to automatically release said l-atch means when a predetermined qiiantity of gasoline has been transferred from the tank,- means to automatically render said onecontrol element inoperative upon release of said latch means, and a second eoin-coiitrolled means to receive the coin delivered from the first coin-controlled means and manually operable to render the other control element operative.

22. The combination with a gasoline pump, wherein means is provided for transferring gasoline from storage tank and delivering a quantity thereof to a desired point of discharge, and wherein twocont-rol elements are provided to controlthe transfer and delivery otthe gasoline t'ron'it the tank to said point of discharge, of coincontrolledmeaus, manually operable to render one ofsaid control elements operative and to deliver the coin therefrom, means'to' automatically latch saidone control element in operative position, means to automatically release said latch means when a predetermined quantity of gasoline has been trans terred from the tank, means to-a'utomatically render said one control element inoperative upon release of said latch means, a second coin-controlled means to receive the coin delivered from the first coin-controlled meansand manually operable to render the othercontrol element operative and to delivery otthegasoline fromthe tank to said point of'discharge, comprising manually'operable coiircontroll'ed means for operating one of said control elements, and manually operable coin-controlled means to' operate the other" control element, said firstnamed manually operable means being adapted when operated to deliverthe. controlling coin to the second named manually operable means:

In testimony whereof laliir; my signature;

I I GEORGE W; KECK; 

